Smart bilayer polymer reactor with cascade/non-cascade switching catalyst characteristics

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dc.contributor.authorWei, W.
dc.contributor.authorXiao, Panpan
dc.contributor.authorThakur, Vijay Kumar
dc.contributor.authorChianella, Iva
dc.contributor.authorLi, Songjun
dc.date.accessioned2020-11-04T12:22:21Z
dc.date.available2020-11-04T12:22:21Z
dc.date.issued2020-05-06
dc.description.abstractIn this work, a new method is proposed to meet the challenge of preparing new catalysts with cascade/non-cascade switching catalytic property. Inspired from “soft” characteristics and divisional isolation function in natural biological systems, this objective was accomplished by developing a new class of hydrogels made of two unique functional layers with different temperature responses where each may self-govern coupled processes at a specific temperature. This hydrogel polymer reactor exhibited almost no catalytic activity at low-temperature range (<37 °C) as both channels of bilayer hydrogel polymer catalyst were closed. At modest temperatures (between 37 °C and 50 °C), the first step of the tandem reaction (the hydrolysis of p-nitrophenyl acetate (NPA)) showed significant reactivity that arises from the relaxing of the weak polymer complexes in the hydrogel layer. This enabled NPA the access to the acidic catalytic active center of the hydrogel. At range of higher temperatures (>50 °C), the hydrogel catalytic polymer reactor further exhibited significant efficiency towards the hydrolysis reaction of NPA as well as the reduction of the intermediate product p-nitrophenol (NP). This mainly resulted from the opening of both the weak polymer complexes and the stronger polymer complexes hydrogel layers, allowing entrance to both the acidic catalytic active center and the metal nanoparticles active center. As a result, the novel hydrogel polymer reactor could be used to control cascade/non-cascade catalysis reactions. This new protocol enables efficient control of switchable tandem reactions, inspiring for difficulty to control tandem catalytic reactorsen_UK
dc.identifier.citationWei W, Xiao P, Thakur VK, et al., (2020) Smart bilayer polymer reactor with cascade/non-cascade switching catalyst characteristics. Materials Today Chemistry, Volume 17, September 2020, Article number 100279en_UK
dc.identifier.issn2468-5194
dc.identifier.urihttps://doi.org/10.1016/j.mtchem.2020.100279
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/15959
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectSelf-controlled catalysisen_UK
dc.subjectBilayer polymeren_UK
dc.subjectTandem catalysisen_UK
dc.subjectHydrogel catalysten_UK
dc.titleSmart bilayer polymer reactor with cascade/non-cascade switching catalyst characteristicsen_UK
dc.typeArticleen_UK

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